Fixed panics

Cargo.toml

@@ -15,7 +15,7 @@ name = "parquet2"
 bench = false
 
 [dependencies]
-parquet-format-async-temp = "0.3.1"
+parquet-format-safe = "0.1"
 bitpacking = { version = "0.8.2", default-features = false, features = ["bitpacker1x"] }
 streaming-decompression = "0.1"
 

examples/read_metadata.rs

@@ -118,7 +118,7 @@ fn main() -> Result<()> {
 
     // ANCHOR: pages
     use parquet2::read::get_page_iterator;
-    let pages = get_page_iterator(column_metadata, &mut reader, None, vec![])?;
+    let pages = get_page_iterator(column_metadata, &mut reader, None, vec![], 1024 * 1024)?;
     // ANCHOR_END: pages
 
     // ANCHOR: decompress

src/bloom_filter/read.rs

@@ -1,6 +1,6 @@
 use std::io::{Read, Seek, SeekFrom};
 
-use parquet_format_async_temp::{
+use parquet_format_safe::{
     thrift::protocol::TCompactInputProtocol, BloomFilterAlgorithm, BloomFilterCompression,
     BloomFilterHeader, SplitBlockAlgorithm, Uncompressed,
 };
@@ -27,7 +27,7 @@ pub fn read<R: Read + Seek>(
     reader.seek(SeekFrom::Start(offset))?;
 
     // deserialize header
-    let mut prot = TCompactInputProtocol::new(&mut reader);
+    let mut prot = TCompactInputProtocol::new(&mut reader, usize::MAX); // max is ok since `BloomFilterHeader` never allocates
     let header = BloomFilterHeader::read_from_in_protocol(&mut prot)?;
 
     if header.algorithm != BloomFilterAlgorithm::BLOCK(SplitBlockAlgorithm {}) {

src/error.rs

@@ -78,8 +78,8 @@ impl From<lz4_flex::block::CompressError> for Error {
     }
 }
 
-impl From<parquet_format_async_temp::thrift::Error> for Error {
-    fn from(e: parquet_format_async_temp::thrift::Error) -> Error {
+impl From<parquet_format_safe::thrift::Error> for Error {
+    fn from(e: parquet_format_safe::thrift::Error) -> Error {
         Error::General(format!("underlying thrift error: {}", e))
     }
 }

src/indexes/index.rs

@@ -1,6 +1,6 @@
 use std::any::Any;
 
-use parquet_format_async_temp::ColumnIndex;
+use parquet_format_safe::ColumnIndex;
 
 use crate::parquet_bridge::BoundaryOrder;
 use crate::schema::types::PrimitiveType;

src/indexes/intervals.rs

@@ -1,4 +1,4 @@
-use parquet_format_async_temp::PageLocation;
+use parquet_format_safe::PageLocation;
 
 use crate::error::Error;
 

src/lib.rs

@@ -18,7 +18,7 @@ pub mod statistics;
 pub mod types;
 pub mod write;
 
-use parquet_format_async_temp as thrift_format;
+use parquet_format_safe as thrift_format;
 
 pub use streaming_decompression::fallible_streaming_iterator;
 pub use streaming_decompression::FallibleStreamingIterator;

src/metadata/column_chunk_metadata.rs

@@ -1,6 +1,6 @@
 use std::sync::Arc;
 
-use parquet_format_async_temp::{ColumnChunk, ColumnMetaData, Encoding};
+use parquet_format_safe::{ColumnChunk, ColumnMetaData, Encoding};
 
 use super::column_descriptor::ColumnDescriptor;
 use crate::compression::Compression;
@@ -117,17 +117,14 @@ impl ColumnChunkMetaData {
 
     /// Returns the offset and length in bytes of the column chunk within the file
     pub fn byte_range(&self) -> (u64, u64) {
-        let col_start = if let Some(dict_page_offset) = self.dictionary_page_offset() {
-            dict_page_offset
+        let start = if let Some(dict_page_offset) = self.dictionary_page_offset() {
+            dict_page_offset as u64
         } else {
-            self.data_page_offset()
+            self.data_page_offset() as u64
         };
-        let col_len = self.compressed_size();
-        assert!(
-            col_start >= 0 && col_len >= 0,
-            "column start and length should not be negative"
-        );
-        (col_start as u64, col_len as u64)
+        let length = self.compressed_size() as u64;
+        // this has been validated in [`try_from_thrift`]
+        (start, length)
     }
 
     /// Method to convert from Thrift.
@@ -137,12 +134,12 @@ impl ColumnChunkMetaData {
     ) -> Result<Self> {
         // validate metadata
         if let Some(meta) = &column_chunk.meta_data {
-            let _: usize = meta.total_compressed_size.try_into()?;
+            let _: u64 = meta.total_compressed_size.try_into()?;
 
             if let Some(offset) = meta.dictionary_page_offset {
-                let _: usize = offset.try_into()?;
+                let _: u64 = offset.try_into()?;
             }
-            let _: usize = meta.data_page_offset.try_into()?;
+            let _: u64 = meta.data_page_offset.try_into()?;
 
             let _: Compression = meta.codec.try_into()?;
         } else {

src/metadata/file_metadata.rs

@@ -1,12 +1,12 @@
 use crate::{error::Error, metadata::get_sort_order};
 
 use super::{column_order::ColumnOrder, schema_descriptor::SchemaDescriptor, RowGroupMetaData};
-use parquet_format_async_temp::ColumnOrder as TColumnOrder;
+use parquet_format_safe::ColumnOrder as TColumnOrder;
 
 pub use crate::thrift_format::KeyValue;
 
 /// Metadata for a Parquet file.
-// This is almost equal to [`parquet_format_async_temp::FileMetaData`] but contains the descriptors,
+// This is almost equal to [`parquet_format_safe::FileMetaData`] but contains the descriptors,
 // which are crucial to deserialize pages.
 #[derive(Debug, Clone)]
 pub struct FileMetaData {
@@ -60,9 +60,7 @@ impl FileMetaData {
     }
 
     /// Deserializes [`crate::thrift_format::FileMetaData`] into this struct
-    pub fn try_from_thrift(
-        metadata: parquet_format_async_temp::FileMetaData,
-    ) -> Result<Self, Error> {
+    pub fn try_from_thrift(metadata: parquet_format_safe::FileMetaData) -> Result<Self, Error> {
         let schema_descr = SchemaDescriptor::try_from_thrift(&metadata.schema)?;
 
         let row_groups = metadata
@@ -86,9 +84,9 @@ impl FileMetaData {
         })
     }
 
-    /// Serializes itself to thrift's [`parquet_format_async_temp::FileMetaData`].
-    pub fn into_thrift(self) -> parquet_format_async_temp::FileMetaData {
-        parquet_format_async_temp::FileMetaData {
+    /// Serializes itself to thrift's [`parquet_format_safe::FileMetaData`].
+    pub fn into_thrift(self) -> parquet_format_safe::FileMetaData {
+        parquet_format_safe::FileMetaData {
             version: self.version,
             schema: self.schema_descr.into_thrift(),
             num_rows: self.num_rows as i64,

src/metadata/row_metadata.rs

@@ -1,4 +1,4 @@
-use parquet_format_async_temp::RowGroup;
+use parquet_format_safe::RowGroup;
 
 use super::{column_chunk_metadata::ColumnChunkMetaData, schema_descriptor::SchemaDescriptor};
 use crate::{

src/metadata/schema_descriptor.rs

@@ -1,4 +1,4 @@
-use parquet_format_async_temp::SchemaElement;
+use parquet_format_safe::SchemaElement;
 
 use crate::{
     error::Error,

src/read/compression.rs

@@ -1,4 +1,4 @@
-use parquet_format_async_temp::DataPageHeaderV2;
+use parquet_format_safe::DataPageHeaderV2;
 use streaming_decompression;
 
 use crate::compression::{self, Compression};

src/read/indexes/deserialize.rs

@@ -1,15 +1,12 @@
-use std::io::Cursor;
-
-use parquet_format_async_temp::{thrift::protocol::TCompactInputProtocol, ColumnIndex};
+use parquet_format_safe::{thrift::protocol::TCompactInputProtocol, ColumnIndex};
 
 use crate::error::Error;
 use crate::schema::types::{PhysicalType, PrimitiveType};
 
 use crate::indexes::{BooleanIndex, ByteIndex, FixedLenByteIndex, Index, NativeIndex};
 
 pub fn deserialize(data: &[u8], primitive_type: PrimitiveType) -> Result<Box<dyn Index>, Error> {
-    let mut d = Cursor::new(data);
-    let mut prot = TCompactInputProtocol::new(&mut d);
+    let mut prot = TCompactInputProtocol::new(data, data.len() * 2 + 1024);
 
     let index = ColumnIndex::read_from_in_protocol(&mut prot)?;
 

src/read/indexes/read.rs

@@ -1,10 +1,8 @@
 use std::convert::TryInto;
 use std::io::{Cursor, Read, Seek, SeekFrom};
 
-use parquet_format_async_temp::ColumnChunk;
-use parquet_format_async_temp::{
-    thrift::protocol::TCompactInputProtocol, OffsetIndex, PageLocation,
-};
+use parquet_format_safe::ColumnChunk;
+use parquet_format_safe::{thrift::protocol::TCompactInputProtocol, OffsetIndex, PageLocation};
 
 use crate::error::Error;
 use crate::indexes::Index;
@@ -102,11 +100,12 @@ fn deserialize_page_locations(
     data: &[u8],
     column_number: usize,
 ) -> Result<Vec<Vec<PageLocation>>, Error> {
-    let mut d = Cursor::new(data);
+    let len = data.len() * 2 + 1024;
+    let mut reader = Cursor::new(data);
 
     (0..column_number)
         .map(|_| {
-            let mut prot = TCompactInputProtocol::new(&mut d);
+            let mut prot = TCompactInputProtocol::new(&mut reader, len);
             let offset = OffsetIndex::read_from_in_protocol(&mut prot)?;
             Ok(offset.page_locations)
         })

src/read/metadata.rs

@@ -4,8 +4,8 @@ use std::{
     io::{Read, Seek, SeekFrom},
 };
 
-use parquet_format_async_temp::thrift::protocol::TCompactInputProtocol;
-use parquet_format_async_temp::FileMetaData as TFileMetaData;
+use parquet_format_safe::thrift::protocol::TCompactInputProtocol;
+use parquet_format_safe::FileMetaData as TFileMetaData;
 
 use super::super::{
     metadata::FileMetaData, DEFAULT_FOOTER_READ_SIZE, FOOTER_SIZE, HEADER_SIZE, PARQUET_MAGIC,
@@ -31,7 +31,7 @@ fn stream_len(seek: &mut impl Seek) -> std::result::Result<u64, std::io::Error>
     Ok(len)
 }
 
-/// Reads from the end of the reader a [`FileMetaData`].
+/// Reads a [`FileMetaData`] from the reader, located at the end of the file.
 pub fn read_metadata<R: Read + Seek>(reader: &mut R) -> Result<FileMetaData> {
     // check file is large enough to hold footer
     let file_size = stream_len(reader)?;
@@ -53,9 +53,7 @@ pub fn read_metadata<R: Read + Seek>(reader: &mut R) -> Result<FileMetaData> {
 
     // check this is indeed a parquet file
     if buffer[default_end_len - 4..] != PARQUET_MAGIC {
-        return Err(Error::OutOfSpec(
-            "Invalid Parquet file. Corrupt footer".to_string(),
-        ));
+        return Err(Error::OutOfSpec("The file must end with PAR1".to_string()));
     }
 
     let metadata_len = metadata_len(&buffer, default_end_len);
@@ -69,7 +67,7 @@ pub fn read_metadata<R: Read + Seek>(reader: &mut R) -> Result<FileMetaData> {
         ));
     }
 
-    let reader = if (footer_len as usize) < buffer.len() {
+    let reader: &[u8] = if (footer_len as usize) < buffer.len() {
         // the whole metadata is in the bytes we already read
         let remaining = buffer.len() - footer_len as usize;
         &buffer[remaining..]
@@ -84,12 +82,15 @@ pub fn read_metadata<R: Read + Seek>(reader: &mut R) -> Result<FileMetaData> {
         &buffer
     };
 
-    deserialize_metadata(reader)
+    // a highly nested but sparse struct could result in many allocations
+    let max_size = reader.len() * 2 + 1024;
+
+    deserialize_metadata(reader, max_size)
 }
 
 /// Parse loaded metadata bytes
-pub fn deserialize_metadata<R: Read>(reader: R) -> Result<FileMetaData> {
-    let mut prot = TCompactInputProtocol::new(reader);
+pub fn deserialize_metadata<R: Read>(reader: R, max_size: usize) -> Result<FileMetaData> {
+    let mut prot = TCompactInputProtocol::new(reader, max_size);
     let metadata = TFileMetaData::read_from_in_protocol(&mut prot)?;
 
     FileMetaData::try_from_thrift(metadata)